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Ideas of Fred Sommers, by Text

[American, fl. 1963, Was at Columbia University, then at Brandeis University.]

1963 Types and Ontology
p.355 p.57 Categories can't overlap; they are either disjoint, or inclusive [Westerhoff]
2005 Intellectual Autobiography
p.26 Sommers promotes the old idea that negation basically refers to terms [Engelbretsen]
p.26 'Predicable' terms come in charged pairs, with one the negation of the other [Engelbretsen]
Intro p.2 Translating into quantificational idiom offers no clues as to how ordinary thinkers reason
'Category' p.3 Predicates form a hierarchy, from the most general, down to names at the bottom
'Existence' p.19 Truthmakers are facts 'of' a domain, not something 'in' the domain
'How We' p.8 Logic which maps ordinary reasoning must be transparent, and free of variables
'Realism' p.17 Unfortunately for realists, modern logic cannot say that some fact exists
'Reference' p.16 In standard logic, names are the only way to refer
'Syllogistic' p.14 Predicate logic has to spell out that its identity relation '=' is an equivalent relation